Electronic transport driven by collective light-matter coupled states in a quantum device

Francesco Pisani (), Djamal Gacemi, Angela Vasanelli, Lianhe Li, Alexander Giles Davies, Edmund Linfield, Carlo Sirtori and Yanko Todorov ()
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Francesco Pisani: Université de Paris
Djamal Gacemi: Université de Paris
Angela Vasanelli: Université de Paris
Lianhe Li: University of Leeds
Alexander Giles Davies: University of Leeds
Edmund Linfield: University of Leeds
Carlo Sirtori: Université de Paris
Yanko Todorov: Université de Paris

Nature Communications, 2023, vol. 14, issue 1, 1-8

Abstract: Abstract In the majority of optoelectronic devices, emission and absorption of light are considered as perturbative phenomena. Recently, a regime of highly non-perturbative interaction, ultra-strong light-matter coupling, has attracted considerable attention, as it has led to changes in the fundamental properties of materials such as electrical conductivity, rate of chemical reactions, topological order, and non-linear susceptibility. Here, we explore a quantum infrared detector operating in the ultra-strong light-matter coupling regime driven by collective electronic excitations, where the renormalized polariton states are strongly detuned from the bare electronic transitions. Our experiments are corroborated by microscopic quantum theory that solves the problem of calculating the fermionic transport in the presence of strong collective electronic effects. These findings open a new way of conceiving optoelectronic devices based on the coherent interaction between electrons and photons allowing, for example, the optimization of quantum cascade detectors operating in the regime of strongly non-perturbative coupling with light.

Date: 2023
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DOI: 10.1038/s41467-023-39594-z

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